Hi Charles,
On Thu, Jan 27, 2011 at 20:26, C.DeRykus <dery...@gmail.com> wrote:
> On Jan 27, 1:51 am, r....@aist.go.jp (Raymond Wan) wrote:
>> I was wondering if there is a way for Perl to give me a warning if I
>> redeclare a variable in a different scope (and thus masking the outer
>> one). Just spent some time debugging this (which was obviously not my
>> intention to give two variables the same name)...and I guess it is a
>> silly mistake that I would do again and again. :-)
> Not that I'm aware of but you could use B::Xref to
> generate a cross reference.
>
> perl -MO=Xref -wle 'my $foo=0; { my $foo = 1; }'
> ...
> $foo i1, i1 <---- 2 instances of '$foo'
Thank you for your suggestion!
Oddly enough, when I run B::Xref through my scripts, I get
"segmentation faults" I don't know if I'm using it incorrectly -- but
on a simple Perl file, it works ok. And of course, it works ok with
your one liner above.
Hopefully it isn't a problem with my scripts -- which seem to be
running ok... Thank you!
Ray
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